[chimerax-users] Debian 10 Installation

[Greg Couch]

So I was able to reproduce this problem with a fresh install of Debian 
10.  The ldd found the bug, libxcb-util.so.1 is missing. And Debian 10 
does not have the libxcb-util1 package, only libxcb-util0.  So I 
downloaded libxcb-utils1_0.4.0-1+b1_amd64.deb from 
https://packages.debian.org/bullseye/amd64/libxcb-util1/download, 
installed it, and then chimerax works.

As an aside, you really should be using Ubuntu instead of Debian for a 
desktop graphics system.  Debian stable is a good reliable Linux 
distribution for a server, but is way behind the times for desktop 
graphics.  In particular, the AMD and Intel open-source drivers are much 
better in Ubuntu and get bug fixes more often.

     -- Greg

On 1/25/2022 6:38 PM, Greg Couch via ChimeraX-users wrote:
>
> The nugget of good news was that you were able to install ChimeraX 
> using apt-get.  That means all of the dependencies we currently know 
> about were installed.  So the problem is probably that either (A) you 
> need to update your graphics driver or (B) that we missed a dependency.
>
> For (A) we recommend the proprietary Nvidia driver if you have Nvidia 
> graphics, or the open-source drivers if you have AMD or Intel 
> graphics.  Please send me the output from "lspci | grep VGA" so I can 
> see what graphics device(s) you have.
>
> For (B), please send me the output from running:
>
>     ldd 
> /usr/lib/ucsf-chimerax/lib/python3.9/site-packages/PyQt5/Qt/plugins/platforms/libqxcb.so
>
> If there is a line that says "not found", then we have found the 
> missing dependency, and I can add it to future deb packages so other 
> people don't have this problem.  But there could be other errors that 
> show up.
>
>     -- Greg
>
> On 1/22/2022 12:30 PM, Martin Urban via ChimeraX-users wrote:
>>
>> Dear ChimeraX users,
>>
>> I have a problem with the installation of ChimeraX under Debian 10 
>> buster.
>>
>> I downloaded the ucsf-chimerax_1.3ubuntu18.04_amd64.deb from the 
>> official website. I installed it one time with: /sudo dpkg -i 
>> //ucsf-chimerax_1.3ubuntu18.04_amd64.deb /and also with /sudo apt-get 
>> install .///ucsf-chimerax_1.3ubuntu18.04_amd64.deb./ Both times I get 
>> the same error message:
>>
>> qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in " " 
>> even though it was found. This application failed to start because no 
>> Qt platform plugin could be initialized. Reinstalling the application 
>> may fix this problem.
>>
>> The full error message is as attachment in this mail.
>>
>> I searched the web for an answer and came up with three entries of 
>> this mailing list. I followed the described way in these mails, but 
>> nothing worked for me (1st mail: 
>> https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-October/002797.html; 
>> 2nd mail: 
>> https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-October/002770.html; 
>> 3rd mail: 
>> https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html)
>>
>> Do you have an answer or a solution to my problem?
>>
>> Greetings from Germany
>>
>> -- Martin
>>
>>
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